(19)

(11)

EP 2 673 929 A2

(12)

(88) Date of publication A3: 15.11.2012 (43) Date of publication: 18.12.2013 Bulletin 2013/51 (21) Application number: 12703211.8 (22) Date of filing: 27.01.2012

(51) International Patent Classification (IPC):  H04L 25/02(2006.01) H04L 5/00(2006.01) (86) International application number: PCT/US2012/023040 (87) International publication number: WO 2012/109037 (16.08.2012 Gazette 2012/33)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 25.01.2012 US 201213358164 23.12.2011 US 201113336599 11.02.2011 US 201161442129 P 11.02.2011 US 201161442087 P (71) Applicant: Qualcomm Incorporated San Diego, CA 92121-1714 (US)	(72) Inventors: GEIRHOFER, Stefan San Diego, CA 92121 (US) CHEN, Wanshi San Diego, CA 92121 (US) LUO, Tao San Diego, CA 92121 (US) GAAL, Peter San Diego, CA 92121 (US) XU, Hao San Diego, CA 92121 (US) (74) Representative: Dunlop, Hugh Christopher et al RGC Jenkins & Co. 26 Caxton Street GB-London SW1H 0RJ GB-London SW1H 0RJ (GB)